Поддръжка за мониторинг на прекъсвания

Поддръжка за мониторинг на прекъсвания за конверсия

Този документ обяснява как да се подкрепи прекъсване по време на конвертирането на изображения с помощта на Aspose.PSD. Този пример използва класа Interrupt за генериране на прекъсване по време на конверсията.

    public static void main(String[] args) throws InterruptedException {

        String dataDir = Utils.getDataDir(SupportForInterruptMonitor.class) + "PSD/";
        ImageOptionsBase saveOptions = new PngOptions();

        InterruptMonitor monitor = new InterruptMonitor();
        SaveImageWorker worker = new SaveImageWorker(dataDir + "big.psb", dataDir + "big_out.png", saveOptions, monitor);

        Thread thread = new Thread(worker);

        try {
            thread.start();

            // The timeout should be less than the time required for full image conversion (without interruption).
            Thread.sleep(3000);

            // Interrupt the process
            System.out.format("Interrupting the save thread #%d at %s\n", thread.getId(), new Date().toString());
            monitor.interrupt();

            // Wait for interruption...
            thread.join();
        } finally {
            // If the file to be deleted does not exist, no exception is thrown.
            File f = new File(dataDir + "big_out.png");
            f.delete();
        }

    }


}

/**
 * Initiates image conversion and waits for its interruption.
 */
class SaveImageWorker implements Runnable {
    /**
     * The path to the input image.
     */
    private final String inputPath;

    /**
     * The path to the output image.
     */
    private final String outputPath;

    /**
     * The interrupt monitor.
     */
    private final InterruptMonitor monitor;

    /**
     * The save options.
     */
    private final ImageOptionsBase saveOptions;

    /**
     * Initializes a new instance of the SaveImageWorker class.
     *
     * @param inputPath   The path to the input image.
     * @param outputPath  The path to the output image.
     * @param saveOptions The save options.
     * @param monitor     The interrupt monitor.
     */
    public SaveImageWorker(String inputPath, String outputPath, ImageOptionsBase saveOptions, InterruptMonitor monitor) {
        this.inputPath = inputPath;
        this.outputPath = outputPath;
        this.saveOptions = saveOptions;
        this.monitor = monitor;
    }

    /**
     * Tries to convert image from one format to another. Handles interruption.
     */
    public void run() {
        Image image = Image.load(this.inputPath);
        try {
            InterruptMonitor.setThreadLocalInstance(this.monitor);

            try {
                image.save(this.outputPath, this.saveOptions);
            } catch (OperationInterruptedException e) {
                System.out.format("The save thread #%d finishes at %s\n", Thread.currentThread().getId(), new Date().toString());
                System.out.println(e);
            } catch (Exception e) {
                System.out.println(e);
            } finally {
                InterruptMonitor.setThreadLocalInstance(null);
            }
        } finally {
            image.dispose();
        }
    }
}